Distribution and Ecology - Floating or attached to water-inhabiting plants among nunerous other species of Myxophyceae. Collected by Dr. W. C. Earle in the vicinity of Manati, Porto Kico, in 1925.

Discussion:

PLATE 12, FIGURE 12

Although it is not generally advisable to identify species of Anabaena without spores, the very small size of the vegetative parts of the above species makes it appear to be wholly distinct from any known species of the genus.